Soap-dispensing machine.



, A. G. WISE. SOAP DISPENSING MACHINE.

APPLICATION FILED MAR.II| 1915.

1,219,364 I Patented-Mar. 13,1917.

TH I E-Eii-l 5-H WITNESSES INVENTOR.

gmm WW ATTORNEY AN'QHONY GEORGE WISE, 0F OLIS, MINNESOTA, ASSIGNOR TO FRANK W. i

ADSIT, 0]? CH8, MINNESOTA.

SOLP-DISPENSIN G MACHINE.

Specification of Letters Patent.

Patented Mar. 13, 1917.

Application filed March 11, 1915. Serial No. 13,731.

To all whom it may concern:

Be it known that I, ANTHONY GEORGE WISE, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented a new may be operated either manually or by means of a foot lever.

One of the objects of my invention is to allow. the liquid'soap to be fed down by gravity to a chamber in which the plunger operates, and allow the plunger to carry, by

means of a spring pressure, a predetermined amountof liquid soap and force it to the outside ofthe dispenser, where it can be caught by the hand of the person using the dispenser.

Another object of my invention is to provide means whereby the definite amount of soap delivered, when the dispenser is operated, can be varied to suit the idea of the person owning or operating the dispenser.

Another object of my invention is to pro-- .vide means whereby the liquid soap will be fed down not only by gravity, but on account of a vacuum established in the dispenser.

Another ob ect of my invention is to allow the retaining cap, carrying the nozzle and I, retaining valve, to be detached so the parts may be cleaned, and by letting the plunger down to the full length of its stroke, when the retaining cap is detached, allow the entire machineto be flushed.

I attain these objects by the mechanism illustrated in' the accompanying drawing in which Figure 1 is a vertical section of the entire machine.

Fig. 2 is a section through the line AA.

Fig. 3 is a section through the longitudinal axis of the plunger and retaining valve- Similar letters and similar figures refer to similar parts throughout.

A bracket 1 preferably of cast iron, suitably secured to a wall or other support- 2' by bolts 2" has formed on one extremity thereof an arm provided with an=.opening or channel 25 adapted to receive within the threaded end 25' thereof a hollow threaded plug 2 carried by the container 3. Gaskets 4 and 5 render the joints liquid proof, as best illustrated in Fig. 1.

A retaining cap 6 when screwed on to the threaded extension 26 of the enlargement 2", serves as a nozzle for dispensing the liquid soap and also incloses a valve 7, a spring 8,

and retainer washer 9. The cap, when removed, can be thoroughly cleaned without allowing the liquid soap in the container to run out and be Wasted. Flutes or channels 11 and a washer 12 maintain a slidable conw I nection between the outer extremities of the stem 10 and a bell crank lever 13 pivoted to the arm 1 at 14, so the valve 29 may be operated by means of the said bell crank.

The bell crank 13 may be operated manually, or it may be connected by a chain 15 to the pivoted lever 16 so as to allow it to be operated by the foot.

An aperture 21 is so located in part 1, that when a pin (not shown), is inserted therein, the bell crank 13 is held in such position that the piston end of stem 10 remains 1n the chamber 17 thereby permitting the retaining cap 6 to he removed for cleaning, without allowing the liquid in the container 3 to run out. If the pin is withdrawn from the hole 21 when the retaining, cap is removed, thepiston head 29 will be forced outside of the chamber 17 by the spring 18, so the liquid soap will run freely out of the container 3 and the entire machine may be flushed.

When the plunger is operated, the first motion is upward; the retaining valve 7 seats itself and the continuing motion of the munication with the channel or inlet 25, not

only by gravity, but by suction due to said partial vacuum, atmospheric pressure being maintained through the aperture 20.

It will be seen that when the plunger is drawn upward by means of the bell crank 13, the valve 7 seats itself against the seat 30 under the action of the spring 8, which abuts on one end against the valve 7 and on the other end against the washer 9 carried by the cap 6, and the other end 7 of the valve 7 which is larger than the aperture 19 and normally closes the same, opens the aperture 19 in the cap 6; this aperture preferably being small .enough to prevent the liquid soap from running therefrom without the soap being under pressure, so that any soap that might, be in the cap 6 would not trickle out of the aperture 19 during the upward travel of the plunger. When the plunger is returned by the spring 18 the valve 7 will be forced from its seat by pressureof the liquid carried downward by the plunger, the liquid soap will be forced through the channels 27 in the cap 6, as better shown in Fig. 2 and out through the aperture 19 until the aperture is closed by the end of the valve 7, when the plunger head 29 forces the valve into its normal position. It is evident therefore that the stem 7 of the ,valve '7 serves two purposes. One is its action as a valve, which prevents escape of liquid when the parts areas shown in Fig.1, and the other isto serve as a stop to limit the motion of the valve 7, both functions, however, being performed simultaneously.

The operation as described shows that a definite'amount of liquid soap will be fed to the chamber 17 after the plunger .is drawn upward, and this definite amount of soap will then be forced past the valve 7 to the interiorof the cap 6 and out through the nozzle 19 upon the return of plunger 10 to its normal position.

In Fig. No. 3 I have shown a means whereby the definite amount of soap, delivered witheach stroke of the plunger, may be varied to suit the purposes of the party owning or operating the soap machine.

In this figure the numeral 23 designates a hole drilled and tapped in the piston valve 29 and stem 10, to snugly receive the headless screw 22, the end of which is normally flush with the face of the piston 29. The operation as described was with the screw 22 turned into the piston 29 so the head was flush or below the surface of the piston head. If, however, this screw 22 is withdrawn so the slotted end of thescrew projects from.

the piston head. of the plunger, the normal position of the pistonhead of the plunger will be determined by. the screw and the piston head spaced from the head 7 the dis-- tance that the screw has been turned out of the piston. As thepiston then will not deat the bottom of said cap scend as far as when the screw is turned.

flush with the piston head, less soap will be forced out at each operation.

Hence, by screwing out this small screw, the amount of soap delivered at each stroke of the plunger is lessened.

The container 3 may be covered with any suitable cover such as 4 which may be locked in position by any suitable means such as 5'. The cover is preferably provided with an opening 20, the function of which has been hereinbefore explained.

\Vhile in this specification the word soap or liquid soap is used to describe the liquid carried in the container 3, the machine may be used for other liquids, and I do not limit myself to an apparatus for dispensing soap.

I am aware that prior to my invention,

said retaining valve toward said seat, a cap 7 surrounding said retaining valve, an orifice closable by said stem when said valve is fully depressed against the tension of said spring by said piston. I

2. In a soap dispenser, the combination of a container having a support for said container, a chamber in said support and an opening leading from said chamber to said container, a piston reciprocally mounted in said chamber, a cap associated with said support at one end of said chamber, a retainin valve reciprocally mounted in said cap and a stem on said retaining valve, an orifice in said cap adapted to be-closed by said stem when said retaining valve is in its normal position, flutes along the walls of said cap, a spring normally holding said plunger against said retainin valve and said stem in position to close said orifice, and a retaining valve spring adapted to seat said valve and open said orifice when said plunger is raised.

. 3. The combination in a soap dispenser of a container having a support for said con-' tainer, a chamber in said support and an opening leading from said chamber to said container, a plunger reciprocally mounted in said chamber, an adjusting screw in the bottom of said plunger, a cap positioned on said support at one end of said chamber, a retaining valve having a stem reciprocally mounted in said cap, a seat for said valve at one end of said chamber, an orifice in said cap adapted to be closed by the stem of said valve in one position of said valve, a spring associated with said valve adapted to hold said stem away from said orifice when said plunger is elevated, a spring associated with said plunger adapted to normally press said plunger against said retaining Valve and close said orifice against the tension of the retaining valve spring, an adjusting screw in said plunger for varying the reciprocal relations of said plunger and said valve, and flutes in the wall of said cap, whereby communication is opened between the part of said cap below said retaining valve and that above said retaining valve when said valve is lifted from its seat.

4; In a soap dispenser, the combination of a container, a mounting for said container having a chamber, a plunger having a piston head at one end operated by means of a bell crank at the other end, a spring normally holding the plunger at the lower end of its stroke, a valve, a stem on said retaining &

valve, a spring normally holding said valve against the piston head of said plunger and capable of closing said valve on its seat when said plunger is' withdrawn, a cap containing said valve and said spring and attached to the mounting for the container, and having its sides fluted and having at one end a nozzle opening. 7

5. In a soap dispenser, a container, a mounting, means for connecting said container to said mounting, a chamber in said mounting, a plunger in said chamber held in normal position by a spring and operable by means of a bell crank, a cap attached to said mounting, a retaining valve, a spring capable of seating said valve in said mounting, said cap having its sides fluted and having at its lower extremity a nozzle opening, said plunger controlling the normal position of said valve.

ANTHONY GEORGE wIsE. 

